Plowshare-securing attachment for plows.



E. OLSON. PLOWSHARE SECURING ATTACHMENT FOR PLOWS.

APPLICATION EILED JUNE 30,1913.

Patented May 19, 1914 gwwmto p Edward Olson EDWARD OLSON, OF ROBBIN, MINNESOTA.

PLOWSHARE-SECURING ATTACHMENT FOR FLOWS.

Specification of Letters Patent.

Application filed June 30, 1913.

Patented May to, m i at. Serial No. 776,573.

1 '0 (ZZZ whom it may concern Be it known that I, EDWARD OLSON, a

citizen of the United States of America,

residing at Robbih, in the county of Kittson and State of Minnesota, have invented certain new and useful Improvements in PlowslnueSecuring Attachments for Ilows, of which the following is a specification.

This invention relates to plow share securing attachments for plows and has for its object, the provision of a device of this character adapted to be secured to the moldboard and land-side of the plow and acting in conjunction with elements carried by the plow share for drawing the plow share into engagement with the land-side and mold-- board, together with means for automatically locking the parts in their plow-share securing position.

Further objects and advantages of the in- Vention will be set forth in the detailed description which now follows.

In the acmnpanying drawing, Figure 1 is an underside perspective view of the landside and mold-board of a plow, showing the attachment in locked position; Fig. 2 is a side elevation of the mold-board and plow share; Fig. 3 is a detail perspective view of the plow share, and Fig. 4 is a transverse vertical section through the plow share.

Liloe numerals designate corrcsponding parts in all of the figures of the drawing.

Referring to the drawing, the numeral 5 designates the mold-board; 6, the land-side, and 7. the plow share. This share coniprises the elongated body portion 7, which, when in use, lies in position to form a continuation of the mold-board and 7, which, when in position, lies in longitudinal alinement with and forms a continuation oi the land-side. A frog 8 is secured in position with its lower edge projecting beyond the lower edge of the mold-board and this frog is provided with an inclined slot 9. plow share carries studs 10 and 11 having enlarged heads 12 and 13. A bracket 14 secured to the land-side has pivoted therein one end of a lever 15 said levecbcing bifurcated at 1(3 for the rcli-cption of a hand lever 17. The lever 15 has pivotal engagement at '18 with lever 17 and lever 17 in turn, has pivotal engagement at '19 with the book 20. This book is pivoted at 21 to the mold-board 5. A stud 22 carried by the portion 7 of the plow share passes through an opening 23 of shoe 8 when the parts are in their asscm- The" bled position. A handle 24 carried by lever 17 provides means for operating the device.

It is thought that the operation of the structure will be apparent from thc dcscription already given. However. it may be briefly stated that the stud It is entered in slot 9 and the plow share moved rcarwardly to bring it into the position shown in Fig. i. This in turn brings the stud 11 into the upper end of the slot. The handle 24 is there upon shoved forward and this move pivot point 1!) downwardly and causesthe hook to swing in beneath Stud 10. not only draws the plow share into firm engagement with the mold-lnmrd and land.- side and frog 8. but effectually prevents disengagement of these parts. Furthermore, the operation of shoving the handle 24. forwardly causes the pivot 18 to move to a point beyond a line drawn from pivot point If) and the pivotal point of the mount ing of lever 15 in bracket l t. The result is to automatically loch these parts against accidental disengagcnnait, for it. is apparent that the tendency of the pivot point 1'.) s to more toward pivot point. l i. but this is prevented by the abutment oi lcvcr 17 against lever 15.

From the foregoing description, it will be o seen that very simple means have been pro vidcd for quickly and otter-lively locking the plow share into engagement with the lnold-board and land-side.

hile the elements shown and described are well adapted to serve the purposes For which they are intended, it is to be understood that the invention is not limited to the precise construction set Forth but in cludcs within its purview such changes as may be made within the scope oi the oppended claims.

llaving described my invention. what T claim is:

1. ln a device of the character (ltS l'iiH-Ki, the combination with a plow share. moldboard and land-side, of a frog by which the mold-board is carried having an inclined slot formed in its lower edge, a pair of studs carried by the plow share, one o't' which engages in said slot, a pair of lovers pi votally connected to each other, one of said lcvc s being pivotally connected at one end to the land-side, and a swingingly mounted rnrnp her of book formation pivoted to the moldboard and adapted to engage beneath the other of said studs the other of said levtrs ti ll I tit) ltlti in its under edge, a pair of headed studs carried by said plow share, one of, which engages in said slot, a hook mounted for swingmg movement upon the mold-board and adapted when swung to move beneath the other of said studs to prevent movement of the plow share with relation to the mold board, a manually operable lever pivoted at one end to said hook, and a second lever pivoted at one end to the first named lever and at the opposite end to the land-side.

3. In a plow construction, the combination g wit-hthe'usual mold-board, land-side and plow share, of a frog by which'the moldboard is carried, said frog having an upwardly and rearwardly directed slot formed 1n 1ts under edge, a pair of headed studs oeeseo carried by said plow share, one ofwhich engages in said slot, a hook mounted for swinging movement upon the mold-board and adapted when swung to move beneath the other of said studs to prevent movement of the plow share with relationto the mold board, a manually operable lever pivoted at one end to said hook and a second lever pivoted at one end to the first named lever and at the opposite end to the land-side, the

throw of the parts being such that When the hook has moved to operative position, the pivot point of engagement of the last named lever with the first named lever is moved beyond the center to thereby automatically look the parts in operative position.

ln testimony whereof I afiix my signature in presence of two witnesses,

EDXVARD OLSON.

' "Vitnesses: 4

J. R. S'roNo, A. E. HAnsoN. 

